Loom



A ril 7, 1931. K. MUTTER 1,799,350

LOOM

Filed Sept. 12, 1927 s sheets-sneak; 1

K. MUTTER 3' Sheets-Sheet. 2

Filed Sept.

p i 1, 1931. K. WE ,860

LOOM

Fileri Sept. 12, 1927 3 sheets-shat. a

Patented Apr. 7, 1 931 I i a UNITED STATES PATENT OFFIC KARL MUT'I'ER, F TRIPTIS, GERMANY LOOM Application filed September 12, 1927, Serial No. 219,106, and in German? June 7, 1926.

This invention relates to improvements in during the movement of the shuttle, engage looms, particularly in-the class of wire looms over the edges of the shed. The holders 4 provided with shuttles, the object of the inrun by means of rollers 7 on guide rails 8 and vention being to effect improvements in the 9, which are secured to the lay shanks 10 and construction of the shuttle operating mechaextend over the whole width of the loom. nism whereby the shuttle is relieved of shocks Between the rails 8 and 9 is secured the reed 55 in its passage back and forth through the 48. The lay, which is rotatably mounted with shed. the shaft 11, is given an oscillatory movement With the above and other objects in view, by crank discs 12 and 13, which are secured the invention consists, in the construction, to a shaft 14. The crank disc 12 acts upon a combination and arrangement of devices slide plate 15, the disc 13 upon a slide plate hereinafter described and claimed. 16. The plates 15 and 16 are secured to a rod In the accompanying drawings Figures 1 17 which is pivotally connected to one of the to of the drawing lllustrate one embodiment lay shanks by means of a pin 18.

u of the present invention. The crank discs 12' and 13 are so con- Figure 1 is a front elevation of the loom. structed as to cause the lay to dwell or rest Figure 2 is a vertical section through the during about a third of a revolution of the loom. shaft 14 at the ends of the movements of the Figure 3 is a partial plan view of mechalay in opposite directions so as to stop the m nism shown in Figure 2. movement of the lay at such periods, and the 70 Figures 4 and 5 show on an enlarged cal sum of the distances of the slide plates and the shuttle housings and the shuttle in a side 1 fr m he axis of rotation of the crank elevation and plan. discs is always the same, so that reliable op- Figure 6 is a detail elevation of a modified eratlOIl of the lay is attained. Such stoppage form of the holder'for the shuttle housing or of e y m vemen has for its purpose to ri a d it uid secure an undisturbed transfer of the shut- Fi 7 shows a id l ti f a ditle from one shuttle housing or carrier to the fication of th apparatus, other, thus greatly facilitating, such trans- Figure 8 is a plan of Figure 7. fer. During the moment of rest in the lay '0 Figure 9 is a section through the shuttle m0VemeI1t,the nw r m v m nt of the Shuthousing on line AB of Figure 7. tle holder 4 is substantially stopped. Hence Figure 10 i detail i f t f th the shuttles are more efficiently guided from rod actuating mechanism, one housing to the other than in known Figure 11 is the catch device for the shuttle looms; illustrated ona'n enlarged scale. The shuttle housings may also be carried 85 Two housings 2 and 3 serve as carriers for y h l 3, Which re of the shape shown the shuttle 1, and these are of tubular recn Fig e 6 and run on a slngle rail 81 by tangular section, open towards the center of .means of rollers the loom. The housings 2 and 3 are so di- The movement of the shuttle housing I 4 mensioned that in each there is room for the holder 4 i eff c ed by m h ni m whi h is 9 entire shuttle. In one of the side walls of diagrammatically shown in' the drawing. each of the two housings 2 and 3 a slot 29 is h l r 4 is ng g d by a Swinging lever located for the passage of-the weft thread. 19, which is mounted on the shaft 11 by. On top, each of the two housings has an openmeans of a pin which is at right angles to 5 ing 30, through which the exchange of the the shaft and on which pin the lower end of shuttle spool may take place when it is dethe said lever is pivoted. The lever 19 resired to replace an empty spool with a full ceives its drive from a rod 21, which is conone. nected thereto as at 22. The rods 21 are Each of the two housings 2 and 3 is secured actuated by means of crank discs 23 and 2A to a U-shaped holder 4, arms 5 and 6 of which, on a shaft 25. Each of the discs 23 bears 10o upon a plate 27, and each of the crank discs 24 upon a plate 26 on one of the rods 21. The arrangement of the crank'discs 23 and 24, as well as the plates 26 and 27', is similar to that of the crank discs 12 and 13 and the plates 15 and 16, shown in Figure 3. On each of the rods 21 is located a guide slot 28 which the shaft 25 engages.

The crank discs 23 and 24 are so formed that between the end of its outward move ment and the beginning of its inward movement the holder 4 remains stationary for about a third of the total time of the movement of the shuttle thereof, and the outward movement of the holder is terminated shortly before the commencement of the lay stroke, so that no special means is necessary for tensioning the weft wire.

The guidance of the shuttle from the housing 2 into the housing 3 and vice versa takes place by the active force of the shuttle. If the shuttle is in'the housing 2 and the movement of said housing is retarded when it approaches the center of the shed, the shuttle continues its movement and enters the housing 3, the distance of which from the housing 2 is less than the length of the shuttle. The movement of the shuttle housings 2 and 3 is so governed that the housing to which the shuttle is being conducted commences its outward movement before said shuttle, which is moving in the same ,direction, is completely transferred thereto, so that the travel of the shuttle is as far as possible free from shocks.

In order that the transference of the shut tle from one housing to the other should be ensured under all conditions, and in fact also for the case where the loom runs slowly, there is located in each of the two housings a piston shaped pusher 31, which, when the housing or carrier containing the shuttle comes near the end of its inward movement, is moved inside the housing towards the outward opening of the shuttle, so that in given cases it moves the shuttle away.

The pusher 31 receives its movement through a push rod 32 which is pivotally connected to one arm of an angle lever 33. The other arm of the angle lever is fork-shaped. \Vhenupon the inward movement of the holder 4 carrying the shuttle the fork-shaped arm 49 of the angle lever 33 strikes against a stop 34, the angle lever is so actuated that the pusher 31 is moved by the stroke of the angle lever outwardly in its housing, that is to say, towards the center of the shed. Said stop is hence engaged between the fork arms 49, 50 until the holder 4 moves outwardly.

In the outward movement of the casing 4, having transmitted the shuttle to the other casing, the fork of the bell crank lever 33 is guided by engagement of its part 50 with a stop 34 in such manner that the bell crank 33 is rocked and through this rocking movement the box bar 32 is adjusted so that the slide 31 returns to its position of rest in the casing 4.

The stop 34 is located upon a. lever 36 mounted at 35 (Figures 1 and 2) on the lay shank 10, one end 37 of which lever is bifurcated and receives the periphery of an eccentric disc 38 on the shaft 11, and is driven through toothed wheel 40 fast on said shaft and pinion 41 on a shaft 39. The speed of rotation of the shaft 39 is such that the stop 34 at every second lay movement is located adjacent the forked end 49, 50 of the lever 33 and effects the operation thereof.

The pusher 31 associated with the holder 4 from which the shuttle has been transferred will be returned to its inoperative or normal position by the action of the stop 34 upon the forked arm 50 of the lever 33, as will be understood.

For ensuring the seating of the shuttle in the housings 2 and 3 catch devices are provided. Each of these consists of a lever 42 (Figure 5) which is under the action of a spring 44 and is provided with a pawl 43. The pawl 43,,when the shuttle is in the housing, enters a cut-away portion 47 of the shuttle. When the shuttle is to be transferred to the other housing, the pusher 31 strikes against a nose 45 of the lever 42, thereby releasing the nose 43 from the cut-away portion 47 of the shuttle.

If a web of small width is to be made upon the loom, the rod 21 is connected to the junction point 46 of the lever 19.

The arrangement described presents the advantage that the width of the looms is brought down to a very small degree, since the period of shuttle movement is limited to the smallest extent while the movement of the lay can be interrupted by long pauses of rest. Considerable speed of the shuttle movement is permitted without looping up on the weft thread. By the speed conditions of the shuttle movement, the acceleration and retardation of the spool is decreased and in this way tearing of the weft thread and over running of the spool is avoided.

Figures 7 to 11 show a further embodiment of the shuttle and the shuttle housing, as well as the device for transferring the shuttle from one housing to the other, and the catch device for the shuttle.

This arrangement is particularly suitable for rapidly operating looms and presents the advantage that upon the insertion of the shuttle in one of the housings, shocks between the shuttle and the pusher are eliminated. I

To this end the catch device, which maintains the shuttle in the correct position in the shuttle housing, is associated with a carrier relati ely movable to said shuttle housing in the direction of the movement of the upon lies free.

shuttle during the transference from one housing to the other.

A shuttle 51 (Figure 8) is brought into use, which for the large diameter of spool has a low Weight and the shuttle housing is in this case open above and on one side (Figure 9), presenting the advantage that the shuttle as well as the pusher acting there- The shuttle 51 and a pusher have guide fillets 80 which slide between corresponding guide plates on the shuttle housing or carrier, thus ensuring noiseless operation.

The pusher 53 is moved by a rod 55, which rod is movable in guides 54. A rod 56 is pivotally connected to the rod 55 and also to an angle lever 57. The movement of the pusher is efiected by said rod by means of the cams 69 and 66 with which said rod is provided. When the rod 55 is moved toward the center of the loom, the pusher 53 is also carried along because of the nose or cam 66 which then engages the pusher. The movement of the bar 55 in the opposite direction is transmitted to the pusher by the nose 69. Movement of the bar inwardly may be ad- J'usted toward the usher, because the cam 69 of the bar is mova le in the recess 68 of the pusher and positions the latter on the outer side.

An arm 58 of the angle lever 57 carries a roller 59, which runs upon a rail 60. Upon striking the stop 34 in the same manner as in Figure 1, the angle, lever 58 is so controlled that the pusher 53 is operated and the catch device holding the shuttle is so controlled that the shuttle is released.

The catch device is formed of a latch 61 which is mounted on a rod 62 also movable in the guides 54 and is under the influence of a spring 63, which brings it into a osition in which it maintains the shuttle loc (ed.

Rod 55 has an oblique end 65 which upon inward movement of said rod through lever 57 and roller 59 engages under a pin 64 carried on the catch 61, causing said catch to be lifted to release the shuttle. During the lifting of the catch 61 the stop 66 located upon the rod 55 is moved so far that it comes into contact with the pusher 53 and upon further movement of the rod 55 effects a movement of the pusher 53 in the shuttle housing.

After the shuttle has been transferred to the other shuttle housing, and the holder 4 of the housing from which the shuttle has been transferred has begun its return movement, the angle lever 57 as a result of its contact with an inclined end 67 of the rail 60, is moved back into the position shown in the drawing, whereby also the rod 55 is correspondingly moved, carrying with it the pusher 53 by means of a stop 69 engaging in a cut away portion 68 of thepusher 53.

The rod 62 which carries the catch 61 is connected with an angle lever 71 which is rotatable about the .same axis as the angle lever 57 by means of the joint rod 70. One arm 72 of the afigl ieverfl carries a roller 7 3 which during the movementof the shuttle housing 4 runs upon a rail 74. The rail 74 is provided at the other end with an inclined piece 75.

While the stop lever 36, which is actuated as previously described by an eccentric disc according to Figures 1 and 2, is located in the position in which the lever arm 58 strikes the stop 34- as a result of the movement of the shuttle housing, an angle piece 76 affixed to the stop 34 lies adjacent the rail 74 so that the roller 73 of the lever arm 72 cannot run upon the inclined piece 75 of the rail 74, but runs upon the upper side of the angle piece 76. If, however, the lever 36 is so actuated by the eccentric disc 38 (Figure 2) that the stop 34 does not lie in the region of the lever arm 58, as in the case when the shuttle housing 4 moves further inwards after resulting delivery of the shuttle and the following outward movement of said housing, the roller 73 no longer runs upon the angle 76 but down the inclined end 75 of the rail 74 and enga es the stop 34. The angle lever 71 is there ore so rotated by striking against the stop 34 that the rod 62 is moved away with the catch 61 towards the center of the loom. When the shuttle housing has begun its return movement outwards, the rod 62 with the catch 61 begins to move back under the action of the inclined end 75 on which the roller 7 3runs. During this movement the shuttle enters the outwardly moved shuttle housing, whereby it is positioned under the catch 61. When the active force of the shuttle is not sufiicient to move it into contact with the pusher 53 in the shuttle housing, then upon the further movement of the rod 62 which acts upon it by means of the catch 61, it is into the shuttle housing.

While the stop 34 is not located in the region of the lever arm 58, the angle lever 57 is held in such a position by means of a spring 78 working upon a stop 77 of the rod 55, that the roller 59 runs on in the direction of the upper surface of the rail 60and cannot slide upon the inclined end 67 of said rail.

aving now particularly described and ascertained the nature of my said invention, and the manner in which the same is to be performed, what I claim is:

1. In a loom, a pair of shuttle carriers mounted for reciprocating movement, means to actuate the said carriers to cause then: to throw the shuttle from one to the other, pusher associated and movable with each car completely drawn rier, and means to actuate said pusher, while the shuttle carriers are still in motion, said pusher actuating means being constructed and arranged to cause the pusher of one carrier to impart a stroke to the shuttle while said carrier is still in motion and the pusher mounted for reciprocating movement, means to actuate the said carriers to cause them to throw the shuttle from one to the other, a pusher associated and movable with each carrier, and means to actuate said pushers, while the shuttle carriers are still in motion said pusher actuating means being constructed and arranged to cause the pusher of one carrier to impart a stroke to the shuttle while thepusher of the other carrier is at rest, so that each pusher delivers its stroke only on each alternate movement of the carrier with whichit is associated, each shuttle carrier having a catch device which releases the shuttle when the'movement of the carrier in which it is located is retarded upon approaching the center of the shed.

4. A loom as claimed in claim 3, in which the catch device is applied to a carrier movable relatively to the shuttle carrier in the direction of the shuttle movement, and which during the transference of the shuttle is moved in the same direction as the shuttle.

5. A loom as claimed in claim 3, in which the catch device is so constructed and arranged that through the movement of the shuttle carrier the catch device is drawn into shuttle engaging position.

6. A loom as claimed in claim 3, in which the catch device is connected to a regulating rod and operated by enga ement with a stop which stop is positioned or operation upon each second movement of the lay.

7 In a loom, in combination with a shuttle carrier, a pusher for ejecting a shuttle from the carrier, while the carrier is still in motion, a catch device to detachably secure the shuttle in the shuttle carrier and means for alternately operating the pusher and the catch de me and so adjusted as to be locked alternately in the region of the said operating means upon successive inward movements of the shuttle carrier.

8. A loom as claimed in claim 7, in which the pusher has a pusher rod by means of which the catch device is caused to release the shuttle prior to moving the pusher.

9. A loom as claimed in claim 3, including a slidable guide rod to act upon the pusher in the direction of the shuttle movement and having two stops between which the pusher shuttle carrier, a pusher for ejecting a shuttle from the carrier, while the carrier is still in motion, a catch device to detachably secure the shuttle in the shuttle carrier and means including rods for alternately operating the pusher and the catch device and so adjusted as to be locked alternately in the region of the said operating means upon successive inward movements of the shuttle carrier.

11. A loom as claimed in claim 10 having rails over which portions of the rods of the pusher and the catch device are so moved that an untimed setting of the rods is prevented.

12. A loom as claimed in claim 10, including a member and a guide piece therefor and which member by control of the stop acting upon both of the rods is so adjusted as to act to control the rod associated with the catch device when the stop is out of the path of the actuating mechanism.

13. In a loom, a lay, a pair of shuttle carriers mounted on the lay for reciprocating movement, means also on the lay to actuate said carriers to .cause them to throw the shuttle from one to the other, a pusher associated and movable with each carrier and means also mounted on the lay to actuate said pushers, while the carriers are still in motion, said pusher actuating means being constructed and arranged to cause the pusher of one,carrier to impart a stroke to the shuttle while the pusher of the other carrier is at rest, so that each pusher delivers its stroke only on each alternate movement of the carrier with which it is associated.

In testimony whereof I aflix my signature.

KARL MUTTER. 

